Thesaurus
necessary
adjective
Synonyms and Antonyms of NECESSARY
1
forcing one's compliance or participation by or as if by law <an emissions test is necessary before you can renew the registration for your car>
Synonyms compulsory, forced, imperative, incumbent, involuntary, necessary, nonelective, obligatory, peremptory, required
Related Words all-important, essential, indispensable, needed, requisite; insistent, persistent, pressing, urgent; demanded, enforced; coercive
Near Antonyms chosen, discretionary; dispensable, unnecessary, unneeded, unwanted; inconsequential, insignificant, nonessential, unimportant
2
impossible to avoid or evade <taxes will always be a necessary evil>
Related Words decided, definite, settled; likely, possible, probable; destined, fated, foreordained, predestined, predetermined, preordained; inexorable, relentless, unremitting, unstoppable
Near Antonyms preventable (also preventible); doubtful, dubious, questionable, shaky, unclear; undecided, unsettled; undependable, unreliable; improbable, unlikely
3
impossible to do without <food and water are necessary for survival>
Synonyms all-important, critical, imperative, indispensable, integral, must-have, necessary, necessitous, needed, needful, required, requisite, vital
Related Words prerequisite; compulsory, mandatory, nonelective, obligatory; consequential, crucial, important, major, material, meaningful, momentous, significant, substantial, weighty; basic, central, fundamental, key, organic; insistent, persistent, pressing, urgent
Near Antonyms undesired, unwanted; inconsequential, insignificant, unimportant; excess, external, extra, extraneous, superfluous, surplus
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